ALL L98 owners....please respond
#1
ALL L98 owners....please respond
I'm building a motor for my truck. I know this is the wrong place but i'm using a L98 heads. What is the power limitations of these heads? I'm using these in place of the swirl port heads that came factory on my truck motor. The L98's look to have been nicely ported but I dont have another set of heads to compare. No sharp edges....all smooth and very rounded. I'm looking for 350 hp at the flywheel? Will these heads support that number.
#4
John Millican posted a few dyno results from an LT1 intake swap with all the bolt-ons and a cam. That guy pulled 300rwhp out of his car with stock heads. I admit the engine was FAR from stock though.
However, stock heads are stock heads.
However, stock heads are stock heads.
#6
I think I've read that they top out about .470 or .475" lift. Not sure exactly, but best to be sure before putting a big camshaft in. I'd call up a company like Comp Cams and see what they recomend. They may have a spring set you can drop in without cutting the heads.
FYI, I ran .460" lift on my L98 with no problems. Just an L98 cam with 1.6rr's.
FYI, I ran .460" lift on my L98 with no problems. Just an L98 cam with 1.6rr's.
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KASR_Z28
3rd Gen / L98 Engine Tech
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09-11-2002 12:46 PM